, Lisa!
OK, unfortunately there's no one plan that everyone can follow and it works. I'm doing Weight Watchers, other people are counting calories or doing South Beach, or even making up their own plans as they go along. It's about finding the plan that works best for you and, most importantly, that you're going to be able to stick with for the rest of your life - unfortunately, if we go back to our old eating habits, then we're going to regain the weight again and that's the thing that we obviously don't want to happen.
Calorie Counting is probably the easiest thing to do if you don't want to buy any new books or commit to going to meetings. A lot of people will log their calories through a site called Fitday - I don't use it, simply because it's slanted towards North American products, and a lot of what I eat isn't listed there... But as I said, it's about finding what works best for you.
In terms of exercise, it's about finding something you enjoy doing. I've joined a gym and work out there 4 times a week for an hour a time. I also walk lots. Other people have started jogging or bike riding. If you haven't exercised for a long time, then I'd suggest starting off slowly - maybe a 15 minute walk every day, that kind of thing...
Another key is to post here often. That way you're accountable not just to yourself, but to the others around here - the number of times I've felt like completely blowing things and then realising that I'd have to account for it here to the women here so haven't hit the junk food is beyond counting. I'm doing this for me, but the thought of having to confess to a blow out has been a factor at times, if that makes sense.
Good luck. I look forward to learning more about you!
Nicole